Improved gas-regulator



C. M. CRESSON. Gas Regulator.

Patented fAp111 11, 1865.

Tfr/y1 N. PETERS, F'hwLhhngmpmr, Waxmngton. D. CV

Nrrn STATES PATENT OFFICE..

CHARLES M. CRESSN, 0F PHII ADELPHIA, PENNSYLVANIA.

IMPROVED GAS-REGULATOR.

Specification forming part of Letters Patent No. 47,189, dated April 11, 1865.

To all whom it may concern:

Be it known that I, CHARLES M. GRnssoN, M. D., of Philadelphia, Pennsylvania, have invented an Improvement in GasRe-gulators; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accoinpanyingdrawings, and to the letters ot reference marked thereon.

Myinvention consists in the use,in gas regulators, of a holder of thel tapering form described hereinafter, so that as the said holder falls the pressure of gas in the outlet-pipe shall be increased to compensate for the inc1 eased friction of a large amount of gas demanded for a large number of barriers in extended gas fitting.

In order to enable others skilled in the art to make and use my invention, I will now proceed to describe its construction and operation.

On reference to the accompanying drawings, which form a part of this specification, Figure 1 is a vertical section of my improved gasregulator; Fig. 2, a sectional plan view of the same; Fig. 3, a vertical section illustrating a modification of my invention; Fig. 4, a secii mal plan ot' Fig. 3, and Fig. 5 a view of the i avc.

On reference to Figs. 1 and 2, A represents a cylindrical casing, within which is another cylindrical casing, B, there being an annular space, C, between the two for containing the water, glycerine, or other suitable fluid. The inner casing is closed at the top, with the exception of an opening, b, for receiving the valve D, and another opening, d, communicating with the outlet-pipe E, which passes through the bottom e of the casin g, there being an opening in the latter communicating with the inlet pipe F. l is the gas-holder, which is made in the form of a hollow frustum of a cone, closed at the top, as seen in Fig. 1, and which is contained in the annular space C between the two casings, the lower edge of the holder being secured to an annular iloat, f, adapted to but arranged to move freely in the said annular space C. The accurate vertical movementof the holder within the exterior casing 4is insured by three guide-rollers, h, each of for a patent for regulating-valve, tiled March 11, 1864, and subsequently allowed. From the top of the holder projects a pin, m, for receiving the detachable Weight a.

into the regulator, q being its initial level; but owing to the pressure of the gas in the holder the level ofthe fluid within the same will be about at so, while that on the outside of the holder will be at y.

In order that the advantages of my invention may be thoroughly understood, it may be well to allude here to gas-regulators having cylindrical instead ot' tapering holders described above.

An ordinary regulator, with a cylindrical holder, is intended to preserve an equal pressure in its outlet-pipe. As a natural conse quence, the supply is deficient at distant burners when all are lighted. In other words, tlfe a ordinary regulator affords no compensation for the loss caused by the friction ofthe gas in passing to distant burners. Supposing the holder G to be in such a position that the line 3 4 (an imaginary line) coincides with the water-line a, the pressure must be estimated by the area of a circle of which the line between the points 3 4 is the diameter.

When the pressure of the gas, however, has so far diminished that the line 1 2 coincides with the water'level m, then the area of supporting-pressure has increased in proportion to the difference in extent ot' an area ofa circle ot' which the line 3 4 is the diameter between that of the area ot1 a circle of which the line 1 2 is the diameter.

ItV will be seen, therefore, that as the holder falls the area of su pporting-pressure decreases. In other words, the pressure in the outlet-pipe is increased to compensate for the increased friction of the large amount of gas demanded for a great number of burners in ext-ended gasttings. y i

Water. a glycerine, or other suitable fluid isintroduced i The modification illn'stratcd in Figs. 3 andV In testimon y whereof l have signed my name to this speeieation in the presence of two subscribing` Witnesses.

CHARLES M. URESSN. Witnesses:

HENRY S. NAGERT, J. S. URSENGARTEN. 

